Printing press



J. F. JIROUSEK PRINTING PRESS Filed March 23, 1934 5 Sheets-Sheet l ATTORNEYJ;

March 1, 1938.

March l, 1938- J. F. .HROUSEK 2,109,485

PRINTING PRESS Filed March 23, 1934 I 5 Sheets-Sheet 2 ligt;

INVENTOR. cfafa/v cwz/Je March l, 1938 J. F. JlRousEK PRINTING PRESS Filed March 23, 1954' 5 Sheets-Sheet 5 ATTORNEYJ" March 1, 1938.

J' F' JlRoUsI-:K

PRINTING PRESS,

5 Sheets sheet 4 Filed March 23, 1934 k R. ww Wm E 0 V O my .n

Iv l

March 1, 193s. J. F. JIROUSEK 2,109,486

PRINTING PRESS Filed March 23, 1954 5 sheets-sheet 5 [07 I on.. o..

INVENTOR.

ATTORNEYJ;

Patented Mar. l, 1938 Pam'rmo mss Joseph F. J

Cleveland, The Chandler and li'loeComllIlly,v

Ollio,acorpol'atlonotohior l y Appuooaoo Muon z3. 19.34 Nominees y related ends, the invention, then, comprises the features hereinafter fully described, and particularly pointed out in the claims, the following description and the annexed drawings setting forth in detail certain illustrative embodiments of the invention, these being indicative however, of but a few of the various ways in which the principle of the invention may be employed.

In said annexed drawings:

Fig. 1 is a side elevational view of anrembodiment of the invention; Fig. 2 is a plan view of the same; Fig. 3 is a vertical sectional view, slightly cated by line III, Fig. 2; Fig. 4 is an enlarged fragmentary sectional detail of a cylinder mounting; Fig. 5 is a fragmentary perspective view and Fig. 6 is a 'fragmentary and elevational view of cylinder adjustments; Fig. 7 is an enlarged fragmentary and elevational view, framing being omitted, of the lower `cylinders and adjacent mechanism; Fig. 8 is a fragmentary front elevational view of the latter; Fig. 9 is an enlarged vertical sectional view taken on a piane substantially indicated by the line IX, Fig. 2; Fig. y10 is an end elevational detail showing the inking roller mountings; and Fig. 11 is an enlargedsectional detail of same, taken on a planev substantially indicated by line XI, Fig. 10.

Referring generally to the drawings, there is shown a framework 2 of suitable construction,

in which is mounted an impression cylinder C for carrying paper to be printed or lithographed, and cooperating therewith is a cylinder P, preferably in generally vertical stack, and illustrated as in placement below the impression cylinder. In addition, another cylinder L is conveniently arranged to be driven in step with the cylinders C and P. The impression cylinder C is supplied with paper from a supply feed table 4, there being suitable transfer means as a series of rollers l between the feed table or stock 4 and the impression cylinder. From the impression cylinder C the printed sheet is taken by off-bearing means, illustrated as a carrier 5 with gi'ipper-iingers 6, and is delivered to delivery table means, illustrated as table 95.

The cylinder P may comprise a body I0 with shaft ends or trunnions mounted in bearing blocks il carried in the frame, preferably with undercut org tongue and groove interengagement. Adjustment of the blocks andcorresponding adjustment-"oi cylinder P is provided by a turnv1s calma (ci. 1er-144) buckle 'and' loclrnuty reglator `|2` betweenzemh block l I and the frame. A' throw-outmechanlsm is incorporated, inthe forx'nfoiy a shaft I3, ',(Flg.

4) mounted in they frame 'and havingy eccentric ends il to engage the` link-ends' I Zoot the turnbuckle regulators: i2. The shaft lIl is turnedfin its after. Y Thecylinder Lis 'also lmnuntedin movable bearings and'` preferably provided with ya bodyr I6 and suitable clamping 'for holding lithograph plates upon fthe periphery.

t vmounting by suitable means,l as described herein-vr Inking rollers 20, (Fig.'9) are: arranged adja-KVV cent the cylinder L, andjit is preferable to mount one at lea'stofV the inking" rollsas' a distributor, providing it with a y'vibrating' or reriiprocating motion'in addition toy its rotary movement, some means being provided., such as a cam' cooperating i with a cani race'carriedby the vend oi.' the inki'ng [rou short; stoner-tails are imovm'iav @netart j and need vnotbe partlcularlzed here;` The-inking enlarged, taken on a plane substantially indirolls are 'in a vco'.`rriage 2'2 'whichv is movable up and down as guided by pin 'and slotA guides'23;

and the assemblage may be"l dropped "downvv out `of xworking position. "For this, a hand lever 2l (Fig. 1), fulcrumed at' 25 ion theirarne, ,is connected through a 1ink`28 to swing a lever 21` and its attached shaft 2l, and operate th'e levers `2ila,29b, into extended (up) or collapsed :(down) position. 'meuk-applying rouers'zn "(Fig. 9i

rollers by a carrier roller 20a which swings alternately to pick up a charge from the ink fount roller 20h. 'Thelatter is intermittentlyrotated by a ratchet actuated lthrough link 20c and lever 20d by a cam 20e on the shaft of the cylinder L.

` The carrier roller 20a is mounted onk a lever 201* which is pivoted at5`20g to-be intermittently opare' supplied through a plurality oradjacent feed operated by cam 30e on the shait oi thewater fount roller. By lthis means, the carrier roller 30h isv alternately contacted with the pick-up roller 30a in the water fount and then with the, distributor roller 30j supplying the cylinder-contacting rollers 30a through the intermediary 'of rollers 30h, 301. For permitting ne adjustment of the water-,supplying rollers 30d with cylinder L, pin and slot controlled eccentric camsllkare Lprovided towhiohthe arms' :om ortho rollers* 30g are connected.y Set-nuts frihold the ad-` justed position. The water rollerassembly may be slightlyv withdrawnl into ,inoperativev position by turning the cam Ilz, thereby pulling the swing carriage 30p back slightly qn its pivot mountin 30s. For permitting entire withdrawal movement of the water-supplying roller assembly, the locking bar 301i may be swung up out of engagement with the cam 39:. and the slotted links 30t allow the-entire roller assembly to be swung back out of the way, as shownin dotted line position.

For holding the sheets to the impression cylinder C, grippers 50 (Fig. 9) arearranged in the periphery, being secured to a bar 5i mounted therein. On one end of the bar 5| extending beyond the impression cylinder is a means for operating the grippers. This may comprise a pinion 52 on said bar 5|, and a coacting gear segment 53 is pivoted on the end ofthe cylinder and rocked by a lever 54 and link 55, the lever 54 being operated by nxed cam 50. A spring 51 is arranged to bear against the extending end of lever 54. From this, it will be seen that `as the cylinder carries the lever 54 around the fixed cam, the lever is periodically rocked to open the gear segment and pinion and close the grppers 50 in the lower position and open' them in the upper or discharge position.

The sheets of paper are received by the grippers of the impression cylinder C by beingbrought to seizing position beneath the cylinder against a gauging-stop 60 (Fig. 9), being thereby accurately positioned in each case ready for the gripper. The gauging-stop'50 is mounted on a rockshaft 5 I, so as to be alternately raised and lowered to stop and to release the forwarded sheet:v

Above the rollers 1 a hold-down or steadying means is provided, such as bars h (Fig. 2) carrying adjustably thereon housings containing freely rotatable pressure-balls b.

Feeding the sheets across the rollers 1 is a pneumatic feeder, preferably in the form of an air-suction wheel 10 which picks up the top sheet,

oil' the stack which is carried by the supply table 4 directly under the suction wheel. The suction wheel is driven in synchronism with the cylinder C, D, etc., through suitable drive means, for instance connecting chain 14 (Fig. 1).

The supply-table 4 is fed upwardly stepl by step as the sheets are removed from the top of the stack, and a suitable mechanism for this may comprise a'lifting-pawl 80, as swungby throw arm 0| (Fig. 1) operated by a crank pin on sprocket 92 on the air-suction wheel shaft. The pawl 00 engages teeth on the ratchet 93 secured to the end of the shaft 04, and the latter through the medium of gearing, turns the shafts 05 to wind up the chains 89 and correspondingly raise the table 4. The extent of throw of the pawl 80, and the corresponding extent of movement for the table 4 at any given time, is controlled by a suitable caliper 81 contacting the top of the stack offeed-sheets. The caliper 91 is carried by an arm on rock shaft 00, which in turn has a lever arm 09 extending in the general path of pawl lever 90, such that the position of the arm 89 limits the extent to which the pawl-arm 90 may eectively throw at each movement.

Adjacent to the supply table 4 or to the rear thereof is a delivery table 95, likewise arranged to be stepwise moved downwardly as the printed sheets are deposited thereon. For this, the table may be supported by chains 90 unwound from shafts 91 which are operated through suitable gearing by the same throwing arm 9| that operates the lifting pawl 90 for the supply table'4.

Link 99 extends from the arm 0| to a`lowering pawl on the ratchet 99 lowering the chains 96,

and the table 0I is thereby stepped down as the table 4 is stepped up. By providing vthe delivery table 95 with castors |00, the table may be run off on the iloor as desired, when low`ered into full discharge position. It will be understood that whenL in position within discharge frame |9I, the table 95 is maintained in proper vertical alignment for operation of the chains 95, by guideengagementwith the -said frame. For general convenience, and especially for allowing access to the table 4, the discharge frame |0| may be mounted to swing laterally from alignment with the main frame 2. Thus, the frame |0| may be connected to the main frame 2 by hinge connections |02. These allow the entire frame |0I,

with its contained delivery table 95, to be swung aside laterally, the initial swing-out position thereof being indicated in dotted lines. in Fig. 2,

and the construction allowing swing-out to the full extent to give clear access to the portions of the apparatus therebeyond. To permit of such swing-out movement, the connecting rod 98 is provided with a universal joint |03 in alignment with the hinges |02.` 4

Accuracy` of alignment and adjustment-relation of the cylinders is provided. A portion of this has already been referred to. Adjustment of the cylinder Cmay further be had for instance, by providing the cylinder with an eccentric mounting |05 4(Fig. 9)', from which extends an arm or arms |09, the radial position of which may be adjusted b y screw-threaded take-up means |01 connectingto a bracket -on the frame. In

order to tighten backlash in the gearing driving the cylinder C when it is adjusted away from cylinder P, the helical gear may be arranged in the form of a split gear wheel, one part il (Fig. 5) being fixed to the cylinder C, and the other part being adjustable with relation thereto. bolts or cap-screws ||2 taking through slots ||5 into the gear-portion ||0. On being loosened, the movable gear portion can be turned sufnciently to in effect tighten the teeth of combined parts ||0, in the coacting gear on the cylinder P, and bolts ||2 being tightened, the gear portions ||0, work together as one. An adjustment of the helical gear ||4 (Fig. 6) ,on the cylinder L may be had by providing slots Il l through which bolts or cap-screws ||6 take into the cylinders. Again,\when the bolts IIB are loosened, the cylinder L may be adjusted arcuately as desired, and on then tightening the bolts IIB, its position relative to the gearing is maintained.

The printed sheets, in order to reach the de livery table 95 from the impression cylinder C, are carried over the top of the intervening mechanism, the feed mechanism, and the off-bearing conveyor 5 extends from pick-up position to above the delivery table 95. the conveyor chains being supported by suitable idlers |20. The end-run of the conveyor 5' is carried byan overhanging or outrigger support |22, thereby being independent of any movements of the. delivery frame |0|. The conveyor 5 is provided with gripper fingers 6, the movable members |23 of which are carried by transverse spindles which extend out to the side of the conveyor to engage suitable trips at charge and discharge positions. one stationary trip t (Fig. 2) throws the arm of the spindle into gripping position at a point adjacent to impression cylinder C at its upper side where the gripper 50 thereof releases the sheet, and another stationary trip t' over the delivery table 95 throws the arm of the gripper finger spindle The operation of the mechanism will be underl stood from the foregoing. A stack of sheets to be printed or lithographed is placed on supply table 4, and by means of a hand crank |26, the table is run up to feed position against the air-suction wheel l0. TheV lithograph cylinder L and the transfer cylinder P being in position, as shown in V Fig.' 3, the cylinder L carrying the lithograph form to be employed; the' Water-rollers 30g are set into engagement with the -face of the lithograph cylinder, and the ink fount supplied with ink. Drive is applied through the shaft |30, this being operated by suitable means, such as a motor, and the main drive shaft I3| is thence actuated through belt |32 and pulley |33. A gear on ment of the supply table suction wheel '|0 and cylinder'L operates the inking rollers and also the water-supply rollers. The olf-bearing conveyor 5 is driven from the cylinder C by a bevel-gear connection |35 (Fig. 1). A'I'he feed and delivery tables are operated through a sprocket chain '|4 whose drive sprocket 'I5 is carried with the cylinder L. With all portions of the mechanism thus in operation, the top-most sheet of thel stack on the supply table is picked oil by the airpassed over the conveyorrollers to the gauge stop 60. The gauge stop 60 is then depressed .and at the same time the gripper 50 is also in position to receive the sheet. 'I'he conveyor` rollers have a higher surface speed than the cylinder C, and the sheet is seized by the gripper 50, and the cylinder C carries-the sheet against the cylinder P and thence around to the top where the gripper 50 is released and the conveyor-gripper 6 catches the sheet and carries it along the path'of the conveyor 5 over the back of the machine, where the conveyorgripper 6 is released and the sheet discharges onto the delivery table 95.- 'I'he supply table 4 is progressively stepped up, as controlled by the caliper 81 on the top of a stack,-this governing the pawl to actuate the ratchet to the extent required, and wind up the chains 86 to raise the table. Correspondingly, the delivery table is lowered by the ratchet mechanism 99, in step with the move- 4. When the delivery table 95 is full, it is disengaged from the chains 96 and is run 01T on its own `castors |00. The delivery frame |0| may be swung aside laterally on the hinges |02, allowing access to the feed table for reloading with paper stock.

For printing instead of lthographing, the cylinders P, L, are taken out and a printing cylinder with the desired, forms clamped thereon is substituted in the bearings I I. The cylinder L may be removable conveniently by having its bearings in the form of bushings |6a to seat in the enlarged recesses in the frame and be fastened to the frame by bolts or cap screws through the bushing flange |6b. A slight movement axially of the cylinder shaft serves to slide the bushings or bearings out of the frame laterally and the shaft or trunnions of the cylinder can then be'slid forwardly out of the frame. It is advantageous to have similar mountings for the upper cylinder also. 'Ihe water roller mechanism is swung back, and the inking roller carriage 22 is raised up to its highest position such that the inking rollers supply the ink to the face of lthe printing cylinder. The sheet feed to the printarouse be further detailed. Guarding impression cylinderv is as described foregoing, likewise the discharge tothe delivery table.

For insuring accuracy of alignment of the inking rollers for contact with the cylinder L, automatically compensating means are provided, in

the form of slide mounts M (Fig. l0), each end of the inking roller having such a slidemount-' ing, and these havingribs slideable in correy sponding guide-ways |4| (Fig. 11), Pin-and slot means M'l (Fig. 10) make possible a sutlicient range of movement for adjustment, and by tightening the pin or screw-threadedmember M", the desired adjusted position of the inking roller mountings may be had. v

In the event of failure of proper feedof sheets,

or from any cause, it vmay sometimes happen that it is desirable to prevent making an ink impression onto the cylinder C. As a further refinement of the invention then, a means is provided for taking care of this situation. -The sheets'as fed to the impression cylinder pass over a small table |40 (Figs. 3 and '7), in'which one or more suction openingsv |\4| are .provided in communication with` a source of vacuum by a suitable conduit connection |42. 'I'he suction is applied normally such that the advance sheet .stops oil the orifice |4| and in such situation a Aplunger |43 in a suitable casing is drawn up such that its stem |44 allows clearance between cam` |45 and lever arm |46. .The application of the suction is timed with the feeding of the sheets, for instance by a valve C|4`| in thesuction line, actuated by a cam |48 to the lever I 49 and connecting rod. If a sheet fails to feed onto the table |40 properly, the oriiice |4| is uncovered, breaking the vacuum, and the plunger |43 .is allowed to fall by gravity, whereupon the stem |44 falls down between the lever arm |46 and the cam |45, and the latter pushes the lever arm |46 on its fulcrum |50. An arm |5| on shaft I3, normally held up by lever |46, is thereupon released, and the spring |52 connected to-an arm |53 on the shaft I3 is thereupon permitted to turn the shaft and through the intermediary of the eccentric connection I4, |2, push the bearing blocks I| and cylinder P outwardly andr out of impression contact. By arranging the upper and lower cylinders substantially in the same vertical plane and the intermediate cylinder just forward thereof, such movement is facilitated.

`Associated withl the lever |46, and particularly u and connecting below with a. stop-link |56which normally rests with its shallow notch on top of a lug I5l on the hand lever 24. Fine adjustment between lever arm |46a and lever |54 is available by a screw-threaded stem |58 in the end of lever |54 extending into contact with lever arm |46a. By such arrangement, at the same time that the lever the stem |44 intervenes, as 'above-described, the lever |54 is also actuated so as'to shift the link |55 to its deep notch on lug |51 anhand-lever 24, and allow the latter rto move and the inking carriage 22 to correspondingly swing downwardly i out of lfeed relation to the cylinder. 'I'here is thus no ink supplied at such time a's there is a failure of sheet feed. Additionally, the shaft |50 may carry an arm |65, preferably with a slot |66 and set nut adjustment, and having a linkv |61 to at the same time push a spring urged pushbutton contact switch |68 and thereby break the circuit to the motor` and stop the press automatically. The mechanism may be conveniently |46 is operated by`camk |45 when y reset by actuation of handle |60, which through the intermediary of link ISI swings arm |62 and the shaft Il back into setting position, and the handle 24 being thrown down at the same time, thereby elevating the inking carriage, the -trip `link luis restored to holding position above the lug |51 of the handle 24. The press is thus again y inoperative position. Also, the link |61 may be swung up, and the switch |68 willlrestore the motor circuit.

Other modes of applying the principle of the der, operating means for said throwout bearings including a rock shaft, links connecting said bearings and rock shaft, an arm for operating said rock shaft, and pneumatically actuated means controlled by the paper feed for operating said arm.

2. A printing press, comprising an impression I cylinder, another cylinder adjacent thereto, throw-out bearings for said last-named cylinder, operating means for said throw-out bearings including a rock shaft, links connecting said bearings and rock shaft, an arm for operating said rock shaft,fmeans controlled by the paper feed for operating said arm, a lever arm, a cam movable near said lever arm, and a member interposable between said cam and lever arm on j failure of paper feed.

3. A printing press, comprising an impression cylinder, another cylinder in association therewith, an inking roller movable with respect to said other cylinder, and throw-out means for said inking roller controlled by the paper feed to said impression cylinder.

4. A printing press, comprising an impression cylinder, another cylinder in` association therewith, an inking roller movable with respect to said other cylinder, and throw-out means for said inking roller controlled by the paper feed, including a vacuum-table having openings normally covered by the paper.

5. A printing press, comprising an impression cylinder, another cylinder in association therewith, an inking roller movable with respect to said other cylinder, throw-out means for said hiking roller controlled by the .paper feed, including a vacuum-table having openings normally covered by the paper, a pneumatic-head in communication with said vacuum-table, and an arm controlling the inking roller.

6. A printing press, comprising an impression cylinder, another cylinder adjacent thereto, throw-out bearings for said last-named cylinder, and means for operating said throw-out bearings, including a rock shaft, links connecting the said bearings and rock shaft, an arm for operating said rock shaft, a cam movable near said arm, a member interposable between said cam and arm on failure of paper-feed, and

a pneumatic-head normally holding said mem.- ber out of inter-position.

7. A printing press, comprising an impression cylinder, another cylinder adjacent thereto,

throw-out bearings for saidlast-named cylinder, means for operating said throw-out bearings, including a rock shaft, links connecting the said bearingsand rock shaft, an arm for operating said rock shaft,A a cam movable near said arm, a member interposable between said cam and arm on failureof paper-feed, a pneumatic-head normally holding said member out of interi-position,

and a vacuum-table in communication with said pneumatic head and over which paper is fed to said cylinders, said vacuum-table having openings normally covered by the paper.

8. A printing press, comprising an impression l cylinder, another cylinder adjacent thereto, throw-out bearings for said last-named cylinder,

pneumatically actuated means controlled by the paper-feed for operating said throw-out bearings, and a manually-controllable lever for resetting said bearings. l

9. A printing press, comprising an impression cylinder, another cylinder adjacent thereto, throw-out bearings for said last-named cylinder, means for rotating said cylinders, and means controlled by the paper feed for operating said throw-out bearings and for stopping the cylinder rotation.

10. A printing press, comprising an impression cylinder, another cylinder adjacent thereto, throw-out bearings for said last-named cylinder, means for operating said throw-out bearings, including a rock shaft, links connecting said bearings and rock shaft, an arm for operating said rock shaft, a cam movable near said arm, a member interposable between said cam and arm on failure of paper-feed, a pneumatic-head normally holding 'saidmember out of interposition,

and a manually controllable lever for resetting said rock shaft.

` 11. A printing press, comprising an impression cylinder, another cylinder adjacent thereto, throw-out bearings for said last-named cylinder, means for operating said throw-out bearings, including a rock shaft, links connecting said bearings and rock shaft, an arm for operating said rock shaft, a cam movable near said arm, a member interposable between said cam and arm on failure of paper-feed, a pneumatic-head normally holding said member out of interposition, a vacuum-table in communication with said pneumatic-head and over which the paper is fed to said cylinders, said vacuum-table having openings normally covered by the paper, and a manually-controllable lever for resetting said rockshaft.

12. A printing press comprising an impression cylinder, another cylinder adjacent thereto and forming therewith a printing couple, and pneumatically-actuated means controlled by the paper feed for moving said second cylinder relatively to said first cylinder to thereby stop the printing operations.

13. A printing press comprising an impression cylinder, another cylinder adjacent thereto and 

